[totem] data: Add support for M4B file in the thumbnailer

[Bastien Nocera <hadess src gnome org>]

commit 38f715ab2a049aa652064ab77bfe1ef5032fc753
Author: Bastien Nocera <hadess hadess net>
Date:   Thu Mar 8 17:21:52 2018 +0100

    data: Add support for M4B file in the thumbnailer
    
    https://bugzilla.gnome.org/show_bug.cgi?id=769005

 data/mime-type-list.txt |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/data/mime-type-list.txt b/data/mime-type-list.txt
index 7f1bcc6..67bc582 100644
--- a/data/mime-type-list.txt
+++ b/data/mime-type-list.txt
@@ -54,6 +54,7 @@ audio/x-flac
 audio/x-gsm
 audio/x-it
 audio/x-m4a
+audio/x-m4b
 audio/x-matroska
 audio/x-mod
 audio/x-mp1